1. Yolo County Planning, Resources and Public Works Department 1 Landfill-based Anaerobic Digestion Compost Pilot project at Yolo County Central Landfill Ramin Yazdani Yolo County Public Works Department Division of Integrated Waste Management July 10, 2007

2. Yolo County Planning, Resources and Public Works Department 2 Project Presentation Project Goals Project Benefits Project Status Questions and Answers

3. Yolo County Planning, Resources and Public Works Department 3 Project Goals Design, construct and demonstrate a landfill- based anaerobic digestion compost project. Use organic waste such as green waste, food waste, manure, and other organics. Produce renewable energy (methane gas) during the anaerobic phase for electricity production. Produce compost during the aerobic phase. Collect data on gas, leachate and emission data. Document project cost and determine project economics as compared to other technologies.

4. Yolo County Planning, Resources and Public Works Department 4 Carbon Credit Clean Compost Project Benefits Greenhouse gases (methane, nitrous oxide, and carbon monoxide) Renewable energy production Greenhouse gas credits Water quality improvements Clean compost GHG Reduction Benefits Renewable Energy Water Quality Benefits

5. Yolo County Planning, Resources and Public Works Department 5 Project Location Map Digester Cell~ Methane Power Facility

6. Yolo County Planning, Resources and Public Works Department 6 Project Design IC engines for Power Generation Power To Grid Blower Removable Cover System Gas collection & Instrumentation Monitoring: Temperature, gas volumes and composition, liquid flowrate and chemistry Flow meter Water Addition and recirculation

7. Yolo County Planning, Resources and Public Works Department 7 Base Layer Construction

8. Yolo County Planning, Resources and Public Works Department 8 Levee Construction

9. Yolo County Planning, Resources and Public Works Department 9 Anchor Trench and Base Layer

10. Yolo County Planning, Resources and Public Works Department 10 Liner Installation

11. Yolo County Planning, Resources and Public Works Department 11 Base Liner System Construction

12. Yolo County Planning, Resources and Public Works Department 12 Anchor Trench and Instrumentation

13. Yolo County Planning, Resources and Public Works Department 13 Permeable Base Layer Construction

14. Yolo County Planning, Resources and Public Works Department 14 First Load of Green Waste & Horse Manure

15. Yolo County Planning, Resources and Public Works Department 15 Laboratory Experiments G/C for gas analysis Columns for gas & leachate measurement

16. Yolo County Planning, Resources and Public Works Department 16 Project Status Project on schedule Filling to be done in August Operation and data collection to start shortly after

17. Yolo County Planning, Resources and Public Works Department 17 Thank you Questions and answers?